Can anybody help?
I updated Nuvi 2599 to NTU 2015.40 device via GarminExpress , but noticed that gmap3d.img and gmapdem.img maps are missing. After removal of unnecessary files (voices, keyboards, etc) from internal memory I got about 2GB of free space (this with gmapprom.img present) and tried to update the map again but these 2 maps are still missing. I also looked at installed maps in ProgramData\Garmin folder on my PC and couldn't find them there as well. I copied gmapdem.img to SD card and device can see that map. I can't do the same with gmap3d.img because this file cannot be unlocked for Nuvi 2599. Any ideas how to get 3D map file on the device? Thanks.

I doubt your problem is to do with space on the unit. GE would have prompted you to insert a microSD card in that case and not simply 'skip' files.

I think 2599 cannot use 3D Buildings/Landmarks [gmap3d.img] nor can it use 3D Terrain [gmapdem.img]. That would be why GE didn't supply them to your LM unit. When you say "I copied gmapdem.img to SD card and device can see that map", do you mean that it only appears in the Map Info or can you actually see DEM [3D terrain] on your unit?

EDIT: 'Struth! Those modern Greeks are as fast as the ancients! Ellinas [aka Pheidippides] has beaten me decisively by 2 minutes .... i gotta train harder, i guess.

Last edited by Neil; 6th May 2015 at 10:38.

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Just to say I managed to install City Navigator Europe NTU 2015-40 on a GPSMAP 64 s following Catymag post #20 here :

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I first installed locked .gmap folder in BaseCamp, unlocked it with UnlockMapsource.exe, then generated unlocked .img file with BaseCamp (MapInstall).
Of course, I had the error message "can't authenticate map, concact your reseller" when I tried to display unlocked .img file on 64s.
So I ran GimgunlockMapsigPatch on unlocked .img file, then changed code page 65001 to 1252 with ImgTool, and finally loaded new .img file on 64 s : City Navigator was well displayed except the fact a few characters (accents) were not displayed.
After unloading new modified map and then reloading source original unlocked map, no bloody error message "can't authenticate maps", and map was well displayed with all characters.

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